Simulations of Electron Energization and Injection by BBFs Using High-Resolution LFM MHD Fields

TitleSimulations of Electron Energization and Injection by BBFs Using High-Resolution LFM MHD Fields
Publication TypeJournal Article
Year of Publication2019
AuthorsEshetu, WW, Lyon, JG, Hudson, MK, Wiltberger, MJ
JournalJournal of Geophysical Research: Space Physics
Date Published02/2019
KeywordsVan Allen Probes
AbstractWe study electron injection and energization by bursty bulk flows (BBFs), by tracing electron trajectories using magnetohydrodynamic (MHD) field output from the Lyon‐Fedder‐Mobarry (LFM) code. The LFM MHD simulations were performed using idealized solar wind conditions to produce BBFs. We show that BBFs can inject energetic electrons of few to 100 keV from the magnetotatail beyond −24 RE to inward of geosynchronous, while accelerating them in the process. We also show the dependence of energization and injection on the initial relative position of the electrons to the magnetic field structure of the BBF, the initial pitch angle, and the initial energy. In addition, we have shown that the process can be nonadiabatic with violation of the first adiabatic invariant (μ). Further, we discuss the mechanism of energization and injection in order to give generalized insight into the process.
URLhttps://agupubs.onlinelibrary.wiley.com/doi/full/10.1029/2018JA025789
DOI10.1029/2018JA025789
Short TitleJ. Geophys. Res. Space Physics


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